Un-bell-ievable

US cops are on the hunt for a man who spent three hours lovingly licking a doorbell before vanishing into the night.

The bloke, who has since been named as 33-year-old Roberto Daniel Arroyo, was caught on CCTV camera as he went about the bizarre - and persistent - activity.

According to reports, the homeowners weren't home at the time but their children were; when they got back from their trip, they reviewed the security footage and found Arroyo going at it with the doorbell, at which point they notified California police.

A clip of the 180-minute love-fest has since been uploaded to Facebook by local news station WJXT4, where it has racked up 1.2 million views and counting.